What It Is:

What It Does:

There are three things happening here: A compound called aluminum zirconium tetrachlorohydrex gly limits the flow of sweat to the skin's surface while absorbing any moisture that sneaks through (at 20 percent, it's the highest strength allowed by the FDA); beta-cyclodextrin molecules replace odor molecules with a fresh, faintly floral scent; and dimethicone and petrolatum moisturize skin.

HOW IT LOOKS/FEELS/SMELLS:

The stick glides on smoothly, depositing a lightweight formula that feels dry, not sticky.

WHY WE LIKE IT:

It has the same sweat-annihilating benefits as the original cream but without the messy residue or telltale white marks. "Just remember that creams deposit more active ingredients because they go on thicker," says Ni'Kita Wilson, a cosmetic chemist. "Swipe the solid twice to get enough coverage."